Failed to read schema document 'http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd'

 we are getting the " Failed to read schema document 'http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>." error  while running the application.

not able to create database schema.

previously it was working, suddenly it start giving error.

i have attach the change log file.

please suggest some solution to sort out this issue

thanks